def nextInstruction(self):
"""Execute the next instruction as specified by InstructionPointer"""
code = self.Code[self.InstructionPointer]
pattern = re.compile("^Take (.*) Line to ([^#]*?)[\t ]*(#.*)?$")
match = pattern.match(code)
line = match.group(1)
destination = match.group(2)
if self.areStationsConnected(self.DataPointer, destination, line):
if destination not in Stations.keys():
raise RuntimeError("Station " + destination + " doesn't exist.")
# Debug
if self._verbose:
pa = "\"%s\"" % self.Accumulator if isinstance(self.Accumulator, str) else str(self.Accumulator)
ps = "\"%s\"" % self.StationValues[destination] if isinstance(self.StationValues[destination], str) else str(self.StationValues[destination])
print ("[" + str(self.InstructionPointer) + "] " + code)
print ("Before: %s (%s)" % (pa, ps))
self.executeStation(destination)
# Debug
if self._verbose:
pa = "\"%s\"" % self.Accumulator if isinstance(self.Accumulator, str) else str(self.Accumulator)
ps = "\"%s\"" % self.StationValues[destination] if isinstance(self.StationValues[destination], str) else str(self.StationValues[destination])
print ("After: %s (%s)" % (pa, ps))
print ("")
else:
raise RuntimeError("Stations " + self.DataPointer + " and " + destination + " are not connected through " + line + " Line.")
self.InstructionPointer += 1
def __init__(self, code, acc, verbose = False):
"""
Initialize a new interpreter.
Arguments:
code -- the code to execute as a string
acc -- initialization value for accumulator
"""
for line in iter(code.splitlines()):
pattern = re.compile("^Take (.*) Line to ([^#]*?)[\t ]*(#.*)?$")
# Add only valid Lines to the code list, ignoring the rest.
if pattern.match(line):
self.Code.append(line)
self._verbose = verbose
self.Accumulator = acc
# Initialize Station Values to their names
for station in Stations.keys():
self.StationValues[station] = station
